The H11 and 9005 bulbs have an "L" shape feature, and the advanced h11 led headlights have a single filament for compatibility with low beams. The 9005 bulbs, on the other hand, provide ideal beams for great illuminating capacity. The H11 bulbs are interchangeable with other low-beam lights like the H8, H9, and H16; however, the 9005 bulbs are only compatible with the 9006 and H13 bulbs, despite having a higher light output. H11 and 9005 bulbs, however, cannot be used interchangeably. It is impossible to fit an H11 in a 9005 socket or vice versa.